Hong Kong, E.G. is an example of a city that is both an island and a FLU, two terms that are defined by the crossword solutions. The island is a 6-letter word meaning 'a tract of land surrounded by water and smaller than a continent' and the FLU is a 3-letter word meaning 'an acute contagious viral infection'. Hong Kong is a Special Administrative Region of China located on the southeastern coast of the country. It is made up of over 200 islands, making it an ideal example of an island city. Additionally, it is prone to outbreaks of the FLU, making it an example of a FLU city as well.